Wuxi Maoqian New Material Technology Co.,Ltd.

Wuxi Maoqian New Material Technology Co.,Ltd.

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Wuxi Maoqian New Material Technology Co.,Ltd.
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Cerâmica de Alumina

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Cerâmica de Alumina
A cerâmica de alumina, também conhecida como cerâmica aluminosa ou cerâmica de alto teor de alumina, é os materiais cerâmicos avançados mais amplamente utilizados na área de engenharia.
Introdução
Componentes principais: A principal fase cristalina é a α-alumina (α-Al₂O₃, estrutura cristalina de corindo), sendo a principal matéria-prima o óxido de alumínio. A pureza varia de 75% a 99,9%. Quanto maior a pureza, melhor o desempenho.
Características principais: A dureza Mohs atinge o nível 9 (perdendo apenas para o diamante), o ponto de fusão é de aproximadamente 2.050 ℃ e pode ser usado de forma estável em um ambiente de 1.600 ℃ por um longo tempo; possui excelente isolamento elétrico, resistência à corrosão ácida e alcalina (exceto ácido fluorídrico e álcalis fortes concentrados), baixo coeficiente de expansão térmica, boa resistência ao choque térmico e o custo geral é menor do que outras cerâmicas avançadas, como carboneto de silício e nitreto de silício.
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